Range finder with thickness measurement function

Abstract

The utility model relates to a distance measuring instrument with a thickness measuring function, which comprises a shell, and a laser distance measuring device, a measuring tape device, a roller distance measuring device, a laser demarcation device and a thickness measuring device which are arranged in the shell, and the distance measuring device comprises one or more of the laser distance measuring device, the measuring tape device and the roller distance measuring device. The laser ranging device, the measuring tape device, the roller ranging device, the laser demarcation device and the thickness measuring device are integrated in the range finder, so that the functions of long-distance laser ranging, short-distance measuring tape ranging, curved-surface roller ranging, material thickness measurement and coating thickness measurement can be realized, and various measurement requirements can be met through one measuring instrument; the functions of the range finder are enriched, the function requirements of daily use of a user are completely met, multiple different instruments do not need to be carried and replaced, and the operation convenience is improved. In addition, various measuring devices are integrated in the shell, so that a user can carry and use the device conveniently.

Description

Technical Field

[0001] This utility model relates to the field of laser ranging technology, and in particular to a rangefinder with thickness measurement function. Background Technology

[0002] Traditional laser rangefinders only offer distance measurement, a limited functionality that fails to meet diverse user needs. Currently, to enhance functionality, some manufacturers have added line projection and measuring tape functions to laser rangefinders, enabling them to perform both line projection and close-range measuring. Users often also require measurement capabilities for material thickness and coating thickness (such as paint). However, existing laser rangefinders lack the ability to measure material or coating thickness, resulting in incomplete measurement functionality and an inability to adequately meet various user testing needs. Users still require separate equipment for measuring material or coating thickness. Therefore, there is an urgent need to develop laser rangefinders with thickness measurement capabilities to satisfy these requirements. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a rangefinder with thickness measurement function.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the distance measuring instrument with thickness measurement function of this utility model includes:

[0007] Distance measuring devices are used to measure length or distance;

[0008] A laser projection device used to project visible laser lines onto the surface of an object;

[0009] Thickness measuring device, used to measure thickness;

[0010] A display screen is used to display the measurement data of the ranging device and the thickness measuring device;

[0011] The control circuit board is electrically connected to the ranging device, the laser projection device, the thickness measuring device, and the display screen.

[0012] The housing, the ranging device, the laser projection device, the thickness measuring device and the control circuit board are all disposed in the housing, and the display screen is disposed on the housing;

[0013] The ranging device includes one or more of a laser ranging device, a measuring tape device, and a roller ranging device; wherein, the laser ranging device is used to measure straight-line distance; the measuring tape device is used to measure straight-line length; and the roller ranging device is used to measure the length of a curved surface or curve.

[0014] Optionally, the control circuit board includes a first circuit board and a second circuit board and a third circuit board electrically connected to the first circuit board;

[0015] The laser ranging device, the laser projection device, and the display screen are all electrically connected to the first circuit board. A button is provided on the housing, and the button is electrically connected to the first circuit board.

[0016] The roller ranging device is electrically connected to the second circuit board;

[0017] The thickness measuring device includes a coating thickness measuring device and / or an ultrasonic thickness measuring device, wherein the ultrasonic thickness measuring device and / or the coating thickness measuring device are electrically connected to the third circuit board.

[0018] Optionally, the light output port of the laser projection device and the transmitting and receiving port of the laser ranging device are both located on the end face of the housing; the interface or probe of the ultrasonic thickness measuring device and / or the coating thickness measuring device are located on the side or end face of the housing; the first tape outlet of the measuring tape device and the roller of the roller ranging device are both located at the junction of the end face and the side face of the housing.

[0019] Optionally, the ultrasonic thickness measuring device includes an ultrasonic probe assembly and an ultrasonic thickness measuring control assembly;

[0020] A pair of ultrasonic probe interfaces are provided on the side or end face of the housing. The ultrasonic probe assembly is disposed outside the housing and is connected to the ultrasonic probe interface wire.

[0021] The ultrasonic thickness measurement control component is disposed on the third circuit board. The ultrasonic thickness measurement control component includes an ultrasonic thickness measurement control chip, an ultrasonic thickness measurement transmitting drive unit and an ultrasonic thickness measurement receiving unit electrically connected to the ultrasonic thickness measurement control chip, and the ultrasonic thickness measurement control chip, the ultrasonic thickness measurement transmitting drive unit and the ultrasonic thickness measurement receiving unit are all electrically connected to the third circuit board.

[0022] The ultrasonic thickness measurement transmitting drive unit is electrically connected to one of the pair of ultrasonic probe interfaces, and the ultrasonic thickness measurement receiving unit is electrically connected to the other of the pair of ultrasonic probe interfaces.

[0023] Optionally, the coating thickness measuring device includes a coating thickness measuring probe and a coating thickness measuring control component;

[0024] The housing has mounting holes on its side or end face. The coating thickness measuring probe is disposed in the mounting holes. The coating thickness measuring control component is disposed on the third circuit board and electrically connected to the third circuit board. The coating thickness measuring probe is electrically connected to the coating thickness measuring control component.

[0025] Optionally, the coating thickness measuring device includes a coating thickness measuring probe, a coating thickness measuring probe interface, and a coating thickness measuring control component;

[0026] The side or end face of the housing is provided with a mounting hole, the coating thickness measuring probe interface is disposed in the mounting hole, the coating thickness measuring control component is disposed on the third circuit board and electrically connected to the third circuit board, and the coating thickness measuring probe interface is electrically connected to the coating thickness measuring control component;

[0027] The coating thickness measuring probe is disposed outside the housing, and the coating thickness measuring probe is connected to the coating thickness measuring probe interface wire.

[0028] Optionally, the probe includes an eddy current coil, a first magnetic transmitting coil, a second magnetic transmitting coil, and a magnetic receiving coil;

[0029] The coating thickness measurement and control component includes a magnetic receiving circuit module, a magnetic transmitting drive circuit, an eddy current measurement circuit module, and a microcontroller, all mounted on the third circuit board.

[0030] The first end of the magnetic receiving coil is electrically connected to the ADC interface of the microcontroller through the magnetic receiving circuit module;

[0031] The first end of the magnetic emission drive circuit is electrically connected to the DAC interface of the microcontroller, and the second end of the magnetic emission drive circuit is electrically connected to the first magnetic emission coil and the second magnetic emission coil.

[0032] The first magnetic transmitting coil and the second magnetic transmitting coil are electrically connected at their corresponding terminals, and the other end of the second magnetic transmitting coil is electrically connected to the corresponding terminal of the eddy current coil and both are grounded; the other end of the eddy current coil is electrically connected to the clock interface of the microcontroller through the eddy current measurement circuit module.

[0033] The display screen is electrically connected to the output port of the microcontroller.

[0034] Optionally, the measuring tape device includes a measuring tape housing, a measuring tape core, a rotating shaft, and a measuring tape;

[0035] The ruler core is disposed inside the measuring tape housing, the rotating shaft is disposed inside the ruler core, and the ruler tape is wound around the rotating shaft;

[0036] The measuring tape shell is provided with a second tape outlet, which is opposite to and parallel to the first tape outlet. One end of the tape is fitted into the second tape outlet and the first tape outlet.

[0037] Optionally, the measuring tape device further includes a secondary display screen, a support, and a displacement sensor;

[0038] The support member is connected between the second tape outlet and the first tape outlet;

[0039] The measuring tape is provided with an identification code that cooperates with the displacement sensor. The displacement sensor is disposed on the support and faces the measuring tape located in the support.

[0040] The secondary display screen is disposed on the side of the housing, and both the secondary display screen and the displacement sensor are electrically connected to the second circuit board;

[0041] The roller ranging device is mounted on the second circuit board and is electrically connected to the second circuit board.

[0042] Optionally, the rangefinder with thickness measurement function further includes a battery, a charging interface is provided on the housing, the battery is disposed inside the housing, the charging interface is connected to the battery through a charging circuit, and the first circuit board is electrically connected to the battery.

[0043] (III) Beneficial Effects

[0044] By integrating a laser rangefinder, measuring tape, roller rangefinder, laser line projection device, and thickness measurement device into the laser rangefinder, it can achieve long-distance laser ranging, short-distance measuring tape ranging, curved surface roller ranging, material thickness measurement, and coating thickness measurement functions. This allows for multiple measurement needs to be met with a single instrument, enriching the functionality of the laser rangefinder and fully satisfying users' daily needs. It eliminates the need to carry and switch between multiple different instruments, improving operational convenience. Furthermore, the integration of multiple measuring devices within the housing makes it easy for users to carry and use. In addition, through a rational layout, the overall size of the laser rangefinder is not significantly increased, maintaining the portability characteristic of a handheld laser rangefinder. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of the rangefinder of this utility model;

[0046] Figure 2 This is a schematic diagram of the internal structure of the rangefinder of this utility model;

[0047] Figure 3 This is a diagram showing the layout of the ultrasonic probe interface of the rangefinder of this utility model.

[0048] Figure 4 This is a schematic diagram of the installation of the ultrasonic probe assembly of the rangefinder of this utility model.

[0049] Figure 5 This is a schematic diagram of a first embodiment of the rangefinder of this utility model;

[0050] Figure 6 This is a schematic diagram of a second embodiment of the rangefinder of this utility model;

[0051] Figure 7 This is a schematic diagram of the fourth side plate of the rangefinder of this utility model.

[0052] [Explanation of Labels in the Attached Image]

[0053] 100: Shell; 103: First side plate; 104: Second side plate; 105: Third side plate; 106: Fourth side plate;

[0054] 111: First circuit board; 112: Second circuit board; 113: Third circuit board;

[0055] 1: Laser rangefinder;

[0056] 2: Measuring tape device; 21: First measuring tape with outlet; 22: Secondary display screen; 24: Support component;

[0057] 3: Roller distance measuring device;

[0058] 4: Laser projection device;

[0059] 51: Ultrasonic thickness measuring device; 511: Ultrasonic probe assembly; 512: Ultrasonic probe interface; 52: Coating thickness measuring device; 521: Coating thickness measuring probe;

[0060] 6: Display screen;

[0061] 7: Buttons;

[0062] 8: Battery. Detailed Implementation

[0063] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0064] While exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0065] like Figure 1 As shown, this utility model provides a rangefinder with thickness measurement function, which includes a rangefinder, a laser projection device 4, a thickness measuring device, a display screen 6, a control circuit board, and a housing 100. The rangefinder is used to measure length or distance, the laser projection device 4 is used to project a visible laser line onto the surface of an object, the thickness measuring device is used to measure thickness, and the display screen 6 is used to display the measurement data of the rangefinder and the thickness measuring device. The rangefinder, laser projection device 4, thickness measuring device, and display screen 6 are all electrically connected to the control circuit board. The rangefinder, laser projection device 4, thickness measuring device, and control circuit board are all housed in the housing 100, and the display screen 6 is mounted on the housing 100. The rangefinder includes one or more of a laser rangefinder 1, a measuring tape device 2, and a roller rangefinder 3, wherein the laser rangefinder 1 is used to measure straight-line distance, the measuring tape device 2 is used to measure straight-line length, and the roller rangefinder 3 is used to measure the length of a curved surface or curve. By integrating a laser rangefinder 1, a measuring tape 2, a roller rangefinder 3, a laser line projection device 4, and a thickness measurement device into the rangefinder, it can achieve long-distance laser rangefinder measurement, short-distance measuring tape rangefinder measurement, curved surface roller rangefinder measurement, material thickness measurement, and coating thickness measurement functions. Multiple measurement needs can be met with a single measuring instrument, enriching the rangefinder's functionality and fully satisfying the user's daily needs. This eliminates the need to carry and switch between multiple different instruments, improving operational convenience. Furthermore, the integration of multiple measuring devices within the housing 100 makes it convenient for users to carry and use.

[0066] See Figure 2 The control circuit board includes a first circuit board 111 and a second circuit board 112 and a third circuit board 113 electrically connected to the first circuit board. The first circuit board 111 is the main control board. The laser rangefinder 1, the laser projection device 4, and the display screen 6 are all electrically connected to the first circuit board. Buttons are provided on the housing 100 and are electrically connected to the first circuit board 111. The measuring tape device 2 and the roller rangefinder 3 are both electrically connected to the second circuit board 112. The thickness measuring device includes a coating thickness measuring device 52 and / or an ultrasonic thickness measuring device 51. The ultrasonic thickness measuring device 51 and / or the coating thickness measuring device 52 are electrically connected to the third circuit board 113.

[0067] In a preferred embodiment, the housing 100 includes a front panel and a back panel disposed opposite to each other, and a first side panel 103, a second side panel 104, a third side panel 105, and a fourth side panel 106 connected between the front panel and the back panel and connected in sequence. Depending on the placement angle of the rangefinder, either the first side panel 103 and the third side panel 105 can be used as the two end faces of the rangefinder, or the second side panel 104 and the fourth side panel 106 can be used as the two end faces of the rangefinder. The front panel is provided with a display screen 6 and buttons 7. The rangefinder is operated by buttons 7 to switch between laser ranging, laser line projection, and thickness measurement functions, and the data obtained from laser ranging and thickness measurement are displayed on the display screen 6. The rangefinder integrates various devices within the housing 100. The laser projection device 4 and the laser rangefinder 1 are arranged side-by-side near the first side plate 103, with the light output port of the laser projection device 4 and the transmitting and receiving ports of the laser rangefinder 1 both located on the first side plate 103. The interface or detection head of the thickness measuring device is located on the second side plate 104. The first tape outlet 21 of the measuring tape device 2 is located at the junction of the second side plate 104 and the third side plate 105, through which the tape is pulled out. The roller of the roller rangefinder 3 is located at the junction of the third side plate 105 and the fourth side plate 106. The junction of the third side plate 105 and the fourth side plate 106 is designed in an arc shape to ensure that the roller can conform to the object being measured while minimizing the external contour of the housing 100, making it convenient for users to carry and use. The ultrasonic thickness measuring device 51 is used to measure the thickness of materials, and the coating thickness measuring device 52 is used to measure the thickness of the coating layer on the material surface. When the rangefinder is equipped only with the ultrasonic thickness measuring device 51, the structure of the rangefinder is as follows: Figure 2 When the rangefinder is equipped only with the coating thickness measuring device 52, the structure of the rangefinder is described in detail below. Figure 3 .

[0068] Furthermore, the front panel, back panel, first side panel 103, second side panel 104, third side panel 105, and fourth side panel 106 together form a sealed housing 100 with a receiving cavity, providing waterproof and dustproof protection. See also Figure 2The laser line projection device 4, laser rangefinder 1, and thickness measuring device are arranged side-by-side at one end of the receiving cavity. The light output port of the laser line projection device 4 and the transmission and reception ports of the laser rangefinder 1 are both located on the first side plate 103. The laser line projection device 4 has a built-in angle sensor, which is electrically connected to the first circuit board 111. The angle sensor can measure the angle of the projection line in real time and display it on the display screen 6. The rangefinder can realize distance measurement, projection of a laser line at a corresponding angle under real-time angle display, and real-time line projection under real-time distance display, thereby greatly improving the accuracy and efficiency of line projection and distance measurement. It can realize distance measurement, arbitrary angle line projection, arbitrary distance fixed-point horizontal marking, and leveling at a specific distance. The third circuit board 113 of the thickness measuring device is snapped between the front panel and the back panel. The interface or detection head of the thickness measuring device is arranged on the second side plate 104 connected to the first side plate 103, so that the layout of the laser line projection device 4, laser rangefinder 1, and thickness measuring device is more compact, which is conducive to reducing the overall size. The roller ranging device 3 is located at the other end of the receiving cavity. The roller of the roller ranging device 3 is located at the junction of the third side plate 105 and the fourth side plate 106, which facilitates handheld measurement of curved surfaces by the housing 100 and reduces the possibility of interference between the housing 100 and the object to be measured. The space-consuming measuring tape device 2 is placed in the middle of the receiving cavity. The first tape outlet 21 of the measuring tape device 2 is located at the junction of the second side plate 104 and the third side plate 105, making reasonable use of the space in the receiving cavity. The rangefinder integrates multiple functional devices. Through reasonable layout, the overall size of the rangefinder will not be significantly increased, and the portable characteristics of a handheld rangefinder are still maintained.

[0069] like Figures 1 to 6 As shown, the ultrasonic thickness measuring device 51 includes an ultrasonic probe assembly 511 and an ultrasonic thickness measuring control assembly. The ultrasonic thickness measuring control assembly is mounted on the third circuit board 113, near the second side plate 104. The second side plate 104 has a pair of ultrasonic probe interfaces 512, and the ultrasonic thickness measuring control assembly is electrically connected to the pair of ultrasonic probe interfaces 512. The ultrasonic probe assembly 511 is located outside the housing 100 and is connected to the ultrasonic probe interfaces 512 via wires.

[0070] Specifically, the ultrasonic thickness measurement control assembly includes an ultrasonic thickness measurement control chip, an ultrasonic thickness measurement transmitting drive unit, and an ultrasonic thickness measurement receiving unit electrically connected to the ultrasonic thickness measurement control chip. The ultrasonic thickness measurement control chip, the ultrasonic thickness measurement transmitting drive unit, and the ultrasonic thickness measurement receiving unit are all electrically connected to a third circuit board and are all existing circuit structures / integrated chips. This application does not make any improvements to the circuit structure / chip of the ultrasonic thickness measurement control chip, the ultrasonic thickness measurement transmitting drive unit, and the ultrasonic thickness measurement receiving unit. The ultrasonic thickness measurement transmitting drive unit is electrically connected to one of a pair of ultrasonic probe interfaces 512, and the ultrasonic thickness measurement receiving unit is electrically connected to the other of the pair of ultrasonic probe interfaces 512.

[0071] Example 1, as Figure 1 , Figure 3 and Figure 4 As shown, the coating thickness measuring device 52 includes a coating thickness measuring probe 521 and a coating thickness measuring control component. The coating thickness measuring probe 521 is an embedded probe. A mounting hole is provided on the second side plate 104, and the coating thickness measuring probe 521 is disposed within the mounting hole. A sealing ring or sealant is provided between the coating thickness measuring probe 521 and the hole wall to provide dustproof and waterproof effects. The coating thickness measuring control component is disposed on and electrically connected to the third circuit board 113, and the coating thickness measuring probe 521 is electrically connected to the coating thickness measuring control component.

[0072] Example 2, as Figure 1 , Figure 5 and Figure 6 As shown, the coating thickness measuring device 52 includes a coating thickness measuring probe 521, a coating thickness measuring probe interface, and a coating thickness measuring control component. The coating thickness measuring probe 521 is a split-type probe. A mounting hole is provided on the second side plate 104, and the coating thickness measuring probe interface is disposed within the mounting hole. A sealing ring or sealant is provided between the coating thickness measuring probe interface and the hole wall to provide dust and water protection. The coating thickness measuring control component is disposed on and electrically connected to the third circuit board 113, and the coating thickness measuring probe interface is electrically connected to the coating thickness measuring control component. The coating thickness measuring probe 521 is disposed outside the housing 100, and the coating thickness measuring probe 521 is connected to the coating thickness measuring probe interface wire.

[0073] Specifically, the probe includes an eddy current coil, a first magnetic transmitting coil, a second magnetic transmitting coil, and a magnetic receiving coil. The coating thickness measurement and control assembly includes a magnetic receiving circuit module, a magnetic transmitting drive circuit, an eddy current measurement circuit module, and a microcontroller, all mounted on and electrically connected to the third circuit board 113. The mounting location of the third circuit board 113 is described in [reference needed]. Figure 2 The microcontroller uses an existing circuit structure / integrated chip, without any modifications to the microcontroller's circuit structure / chip. The first end of the magnetic receiving coil is electrically connected to the microcontroller's ADC interface via the magnetic receiving circuit module. The first end of the magnetic transmitting drive circuit is electrically connected to the microcontroller's DAC interface. The second end of the magnetic transmitting drive circuit is electrically connected to the first and second magnetic transmitting coils. The corresponding ends of the first and second magnetic transmitting coils are electrically connected. The other end of the second magnetic transmitting coil is electrically connected to the corresponding end of the eddy current coil, and both are grounded. The corresponding ends of the coils refer to the magnetic fields generated when alternating current or direct current is applied to each coil. When the magnetic flux directions are superimposed, the current-inflow ends of the two coils are their corresponding ends, and the current-outflow ends of the two coils are another set of corresponding ends. The other end of the eddy current coil is electrically connected to the microcontroller's clock interface via the eddy current measurement circuit module. The display screen 6 is electrically connected to the microcontroller's output port and displays the values ​​acquired by the coating thickness measurement probe 521.

[0074] See Figure 2 and Figure 7 The measuring tape device 2 includes a measuring tape shell, a measuring tape core, a rotating shaft, and a measuring tape. The measuring tape core is disposed inside the measuring tape shell, and the rotating shaft is disposed inside the measuring tape core. The measuring tape is wound around the rotating shaft. The measuring tape shell is provided with a second measuring tape outlet, which is opposite to and parallel to the first measuring tape outlet 21. One end of the measuring tape passes through the second measuring tape outlet and the first measuring tape outlet 21 in sequence and is fitted into the second measuring tape outlet and the first measuring tape outlet 21. The measuring tape is provided with graduations.

[0075] In a preferred embodiment, the measuring tape device 2 further includes a secondary display screen 22, a second circuit board 112, a support member 24, and a displacement sensor. The support member 24 is fixedly connected between the second tape outlet and the first tape outlet 21. The tape has an identification code that cooperates with the displacement sensor. The displacement sensor is mounted on the support member 24 and faces the tape located within the support member 24. The displacement sensor obtains the displacement of the tape through the identification code on the tape. Both the secondary display screen 22 and the displacement sensor are electrically connected to the second circuit board 112. The second circuit board 112 is equipped with conventional data acquisition and processing circuitry to acquire data from the displacement sensor and display it on the secondary display screen 22. The secondary display screen 22 is mounted on the fourth side panel 106, which faces the user when using the measuring tape function for easy observation. A roller ranging device 3 is mounted on and electrically connected to the second circuit board 112. The roller ranging device 3 uses conventional equipment, and the second circuit board 112 acquires data from the roller ranging device 3 and displays it on the secondary display screen 22.

[0076] See Figure 2The rangefinder with thickness measurement function also includes a battery 8. A charging interface is provided on the fourth side plate 106. The battery 8 is located inside the housing 100 and is arranged between the measuring tape device 2 and the laser rangefinder 1. The charging interface is connected to the battery 8 through a charging circuit for charging the battery 8. The first circuit board 111 is electrically connected to the battery 8. The laser rangefinder 1, measuring tape device 2, roller rangefinder 3, laser projection device 4, and thickness measurement device are powered by the built-in battery 8, which improves the portability of the instrument.

[0077] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0078] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0079] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0080] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A range finder having a thickness measuring function, characterized by comprising: The rangefinder includes: Distance measuring devices are used to measure length or distance; A laser projection device used to project visible laser lines onto the surface of an object; Thickness measuring device, used to measure thickness; A display screen is used to display the measurement data of the ranging device and the thickness measuring device; The control circuit board is electrically connected to the ranging device, the laser projection device, the thickness measuring device, and the display screen. The housing, the ranging device, the laser projection device, the thickness measuring device and the control circuit board are all disposed in the housing, and the display screen is disposed on the housing; The ranging device includes one or more of a laser ranging device, a measuring tape device, and a roller ranging device; wherein, the laser ranging device is used to measure straight-line distance; the measuring tape device is used to measure straight-line length; and the roller ranging device is used to measure the length of a curved surface or curve.

2. The range finder with a thickness measurement function according to claim 1, wherein, The control circuit board includes a first circuit board and a second circuit board and a third circuit board electrically connected to the first circuit board; The laser ranging device, the laser projection device, and the display screen are all electrically connected to the first circuit board. A button is provided on the housing, and the button is electrically connected to the first circuit board. The roller ranging device is electrically connected to the second circuit board; The thickness measuring device includes a coating thickness measuring device and / or an ultrasonic thickness measuring device, wherein the ultrasonic thickness measuring device and / or the coating thickness measuring device are electrically connected to the third circuit board.

3. The range finder with a thickness measuring function according to claim 2, wherein The light output port of the laser projection device and the transmitting and receiving port of the laser ranging device are both located on the end face of the housing; the interface or probe of the ultrasonic thickness measuring device and / or the coating thickness measuring device are located on the side or end face of the housing; the first tape outlet of the measuring tape device and the roller of the roller ranging device are both located at the junction of the end face and the side face of the housing.

4. The range finder with a thickness measuring function according to claim 2, wherein, The ultrasonic thickness measuring device includes an ultrasonic probe assembly and an ultrasonic thickness measuring control assembly. A pair of ultrasonic probe interfaces are provided on the side or end face of the housing. The ultrasonic probe assembly is disposed outside the housing and is connected to the ultrasonic probe interface wire. The ultrasonic thickness measurement control component is disposed on the third circuit board. The ultrasonic thickness measurement control component includes an ultrasonic thickness measurement control chip, an ultrasonic thickness measurement transmitting drive unit and an ultrasonic thickness measurement receiving unit electrically connected to the ultrasonic thickness measurement control chip, and the ultrasonic thickness measurement control chip, the ultrasonic thickness measurement transmitting drive unit and the ultrasonic thickness measurement receiving unit are all electrically connected to the third circuit board. The ultrasonic thickness measurement transmitting drive unit is electrically connected to one of the pair of ultrasonic probe interfaces, and the ultrasonic thickness measurement receiving unit is electrically connected to the other of the pair of ultrasonic probe interfaces.

5. The range finder with a thickness measuring function according to claim 2, wherein, The coating thickness measuring device includes a coating thickness measuring probe and a coating thickness measuring control component; The housing has mounting holes on its side or end face. The coating thickness measuring probe is disposed in the mounting holes. The coating thickness measuring control component is disposed on the third circuit board and electrically connected to the third circuit board. The coating thickness measuring probe is electrically connected to the coating thickness measuring control component.

6. The range finder with a thickness measuring function according to claim 2, wherein, The coating thickness measuring device includes a coating thickness measuring probe, a coating thickness measuring probe interface, and a coating thickness measuring control component; The side or end face of the housing is provided with a mounting hole, the coating thickness measuring probe interface is disposed in the mounting hole, the coating thickness measuring control component is disposed on the third circuit board and electrically connected to the third circuit board, and the coating thickness measuring probe interface is electrically connected to the coating thickness measuring control component; The coating thickness measuring probe is disposed outside the housing, and the coating thickness measuring probe is connected to the coating thickness measuring probe interface wire.

7. The range finder with a thickness measuring function according to claim 5 or 6, wherein The probe includes an eddy current coil, a first magnetic transmitting coil, a second magnetic transmitting coil, and a magnetic receiving coil; The coating thickness measurement and control component includes a magnetic receiving circuit module, a magnetic transmitting drive circuit, an eddy current measurement circuit module, and a microcontroller, all mounted on the third circuit board. The first end of the magnetic receiving coil is electrically connected to the ADC interface of the microcontroller through the magnetic receiving circuit module; The first end of the magnetic emission drive circuit is electrically connected to the DAC interface of the microcontroller, and the second end of the magnetic emission drive circuit is electrically connected to the first magnetic emission coil and the second magnetic emission coil. The first magnetic transmitting coil and the second magnetic transmitting coil are electrically connected at their corresponding terminals, and the other end of the second magnetic transmitting coil is electrically connected to the corresponding terminal of the eddy current coil and both are grounded; the other end of the eddy current coil is electrically connected to the clock interface of the microcontroller through the eddy current measurement circuit module. The display screen is electrically connected to the output port of the microcontroller.

8. The range finder with a thickness measuring function according to claim 3, wherein, The measuring tape device includes a measuring tape casing, a measuring tape core, a rotating shaft, and a measuring tape strip; The ruler core is disposed inside the measuring tape housing, the rotating shaft is disposed inside the ruler core, and the ruler tape is wound around the rotating shaft; The measuring tape shell is provided with a second tape outlet, which is opposite to and parallel to the first tape outlet. One end of the tape is fitted into the second tape outlet and the first tape outlet.

9. The range finder with a thickness measuring function according to claim 8, wherein, The measuring tape device also includes a secondary display screen, a support component, and a displacement sensor; The support member is connected between the second tape outlet and the first tape outlet; The measuring tape is provided with an identification code that cooperates with the displacement sensor. The displacement sensor is disposed on the support and faces the measuring tape located in the support. The secondary display screen is disposed on the side of the housing, and both the secondary display screen and the displacement sensor are electrically connected to the second circuit board; The roller ranging device is mounted on the second circuit board and is electrically connected to the second circuit board.

10. The range finder with a thickness measuring function according to claim 2, wherein, The range finder with the thickness measurement function further comprises a battery, a charging interface is arranged on the shell, the battery is arranged in the shell, the charging interface is connected with the battery through a charging circuit, and the first circuit board is electrically connected with the battery.

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